Hike beneath The Horns (Los Cuernos) in the French Valley (Valle Frances) in Torres del Paine National Park, Chile. "The Horns" (about 6900 feet or 2100 meters elevation) are a pinkish-white granodiorite intrusion formed 12 million years ago topped with an older crumbly dark sedimentary rock, exposed by freeze-thaw erosion and glaciation. The foot of South America is known as Patagonia, a name derived from coastal giants, Patagão or Patagoni, who were reported by Magellan's 1520s voyage circumnavigating the world and were actually Tehuelche native people who averaged 25 cm (or 10 inches) taller than the Spaniards.